Add game votes.
Change votes a little bit.
Code Review fixes.
Merge remote-tracking branch 'origin/master' into game_votes

Conflicts:
	app/views/games/index.html.erb
	app/views/games/play.html.erb
	db/schema.rb
Fixed generating url for votes.
Fix tests.
Merge pull request #21 from KillaPL/game_votes

Game votes